BQ24230H_14 Datasheet, PDF (6/38 Pages) Texas Instruments – USB-Friendly Lithium-Ion Battery Charger and Power-Path Management IC

bq24230H
bq24232H
SLUSBI8 – JANUARY 2014
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
BATTERY CHARGER
I_BAT(SC)
Source current for BAT pin short-
circuit detection
V_BAT = 1.5 V
V_BAT(SC)
BAT pin short-circuit detection
threshold
V_BAT rising
V_BAT(REG)
V_LOWV
Battery charge voltage
Precharge to fast-charge transition
threshold
V_IN > UVLO and V_IN > V_BAT + V_IN(DT)
t_DGL1(LOWV)
Deglitch time on precharge to fast-
charge transition
t_DGL2(LOWV)
Deglitch time on fast-charge to
precharge transition
Battery fast-charge current range
V_BAT(REG) > V_BAT > V_LOWV, V_IN = 5 V, CE = LO,
EN1 = LO, EN2 = HI
I_CHG
Battery fast-charge current
CE = LO, EN1= LO, EN2 = HI,
V_BAT > V_LOWV, V_IN = 5 V, I_INmax > I_CHG, no load
on OUT pin, thermal loop and DPM loop not
active
K_ISET
K_PRECHG
I_TERM
Fast-charge current factor
Precharge current factor
Termination comparator threshold
for internally set termination
detection
25 mA ≤ I_CHG ≤ 500 mA
2.5 mA ≤ I_PRECHG ≤ 50 mA
CE = LO, (EN1,EN2) ≠ (LO,LO),
V_BAT > V_RCH, t < t_MAXCH, V_IN = 5 V, DPM loop
and thermal loop not active
CE = LO, (EN1,EN2) = (LO,LO),
V_BAT > V_RCH, t < t_MAXCH, V_IN = 5 V, DPM loop
and thermal loop not active
I_TERM
Termination current threshold for
programmable termination
detection
I_TERM = 0% to 50% of I_CHG
I_BIAS(ITERM)
Current for external termination-
setting resistor
K_ITERM
K factor for termination detection
threshold (externally set)
(bq24232H)
CE = LO, (EN1,EN2) ≠ (LO,LO),
V_BAT > V_RCH, t < t_MAXCH, V_IN = 5 V, DPM loop
and thermal loop not active
CE = LO, (EN1,EN2) = (LO,LO),
V_BAT > V_RCH, t < t_MAXCH, V_IN = 5 V, DPM loop
and thermal loop not active
t_DGL(TERM)
Deglitch time, termination detected
V_RCH
Recharge detection threshold
V_IN > UVLO and V_IN > V_BAT + V_IN(DT)
t_DGL(RCH)
Deglitch time, recharge threshold
detected
t_DGL(NO-IN)
Delay time, input power loss to
charger turnoff
I_BAT(DET)
Sink current for battery detection
t_DET
Battery detection timer
BATTERY CHARGING TIMERS
t_PRECHG
t_MAXCHG
t_PRECHG
t_MAXCHG
K_TMR
Precharge safety timer value
Charge safety timer value
Precharge safety timer value
Charge safety timer value
Timer factor
V_BAT = 3.6 V. Time measured from
V_IN: 5 V → 3 V 1-μs fall time
V_BAT=2.5 V
BAT high or low
TMR = floating
TMR = floating
18 kΩ < R_TMR < 72 kΩ
18 kΩ < R_TMR < 72 kΩ
MIN
TYP
MAX
4
1.6
4.306
2.9
25
7.5
11
1.8
2
4.35
4.394
3
3.1
25
25
500
K_ISET/R_ISET
797
70
0.09 x I_CHG
870
88
0.1 x I_CHG
0.027 x I_CHG 0.033 x I_CHG
975
106
0.11 x
I_CHG
0.040 x
I_CHG
K_ITER x R_ITERM/R_ISET
72
75
78
0.024
0.030
0.036
0.009
V_BAT(REG)
–140 mV
5
0.010
0.011
25
V_BAT(REG)
–100 mV
V_BAT(REG)
–60 mV
62.5
20
7.5
10
250
1440
1800
14400
18000
R_TMR × K_TMR
10 × RTMR × K_TMR
30
40
2160
21600
50
UNIT
mA
V
V
V
ms
ms
mA
A
AΩ
AΩ
A
A
μA
A
ms
V
ms
ms
mA
ms
s
s
s
s
s/kΩ
6
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